作者:P. Perj�si、G. Batta、A. F�ldesi
DOI:10.1007/bf00811861
日期:1994.4
Reaction of 2-benzylidene-1-benzocyclanones 1 with dithiocarbamic acid afforded open-chain addition products 2A-4B. Dehydration of the adducts yielded tricyclic 1,3-thiazine-2-thiones 5 and 6. Treatment of 1 with thiourea under acid conditions gave tricyclic 2-amino-1,3-thiazines 7-9. IR and H-1 NMR spectroscopic investigations showed 7-9 to exist predominantly in the amino tautomeric form both in the solid state and in solution.